FRIBERG, Sven. The Roentgenological end Results After Caliper Treatment of Coxa Plana with Varying Degrees of Epiphyseal Involvement. Acta Orthopaedica, [S. l.], v. 46, n. 2, p. 234–245, 1975. DOI: 10.3109/17453677508989214. Disponível em: https://actaorthop.org/actao/article/view/29475. Acesso em: 12 may. 2026.